package com.lanyou.cook.entity.domain;

import java.util.Date;
import java.util.Set;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
import javax.persistence.OneToOne;
import javax.persistence.Table;
import javax.persistence.Transient;
import javax.persistence.Version;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.apache.commons.beanutils.PropertyUtils;
import org.hibernate.annotations.GenericGenerator;
import org.springframework.data.annotation.CreatedBy;
import org.springframework.data.annotation.CreatedDate;
import org.springframework.data.annotation.LastModifiedBy;
import org.springframework.data.annotation.LastModifiedDate;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;

import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.lanyou.cook.common.DefaultDateJsonSerializer;
import com.lanyou.cook.entity.kettle.KettleDirectory;
import com.lanyou.cook.entitylistener.domain.FieldEntityListenerForKettleObject;
import com.lanyou.cook.entitylistener.domain.FieldEntityListenerForLog;

@Entity
@EntityListeners({ AuditingEntityListener.class, FieldEntityListenerForLog.class, FieldEntityListenerForKettleObject.class})
@Table(name = "T_COOK_DB_FIELD")
public class Field {

	private String id;
	
	private int version;

	private String name;

	private String remark;

	private String creator;

	private String modifier;

	private Date createTime;

	private Date modifyTime;

	private Set<FieldSystem> fieldSystems;
	
	private KettleDirectory kettleDirectory;
	
	public final static Specification<Field> EmptySpecification = new Specification<Field>(){
		@Override
		public Predicate toPredicate(Root<Field> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
			return null;
		}
	};

	@Id
	@GeneratedValue(generator = "uuidGenerator")
	@GenericGenerator(name = "uuidGenerator", strategy = "uuid")
	@Column(name = "FIELD_ID", length = 36)
	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	@Version
	@JsonIgnore
	public int getVersion() {
		return version;
	}

	public void setVersion(int version) {
		this.version = version;
	}

	@Column(name = "FIELD_NAME", nullable = false, unique = true, length = 50)
	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	@Column(length = 100)
	public String getRemark() {
		return remark;
	}

	public void setRemark(String remark) {
		this.remark = remark;
	}

	@CreatedBy
	@Column(length = 50, updatable=false)
	public String getCreator() {
		return creator;
	}

	public void setCreator(String creator) {
		this.creator = creator;
	}

	@LastModifiedBy
	@Column(length = 50)
	public String getModifier() {
		return modifier;
	}

	public void setModifier(String modifier) {
		this.modifier = modifier;
	}

	@Column(name = "CREATED_DATE", updatable=false)
	@JsonSerialize(using = DefaultDateJsonSerializer.class)
	@CreatedDate
	public Date getCreateTime() {
		return createTime;
	}

	public void setCreateTime(Date createTime) {
		this.createTime = createTime;
	}

	@Column(name = "LAST_UPDATED_DATE")
	@JsonSerialize(using = DefaultDateJsonSerializer.class)
	@LastModifiedDate
	public Date getModifyTime() {
		return modifyTime;
	}

	public void setModifyTime(Date modifyTime) {
		this.modifyTime = modifyTime;
	}

	@OneToMany(fetch = FetchType.LAZY, mappedBy = "field")
	@JsonIgnore
	public Set<FieldSystem> getFieldSystems() {
		return fieldSystems;
	}

	public void setFieldSystems(Set<FieldSystem> fieldSystems) {
		this.fieldSystems = fieldSystems;
	}
	
	@OneToOne(cascade = CascadeType.ALL, orphanRemoval = true)
	@JoinColumn(name = "R_DIRECTORY_ID")
	@JsonIgnore
	public KettleDirectory getKettleDirectory() {
		return kettleDirectory;
	}

	public void setKettleDirectory(KettleDirectory kettleDirectory) {
		this.kettleDirectory = kettleDirectory;
	}

	// 用于Spoon
	@Transient
	public Long getKettleDirectoryId() {
		try {
			return (long) PropertyUtils.getProperty(kettleDirectory, "id");
		} catch (Exception e) {
			return null;
		}
	}

}
